The Isobaric Surface Tensions and Thermodynamic Properties of the Surfaces of a Series of n-Alkanes, C₅ to C₁₈, 1-Alkenes, C₆ to C₁₆, and of n-Decylcyclopentane, n-Decylcyclohexane and n-Dcylbenzene.

Abstract

This is ,the third of a series of three papers on the surface tension measurements of a series of n-alkanes and 1-allienes mntle :Lvailable by the American Petroleum Institute Research Project 44. I n the following there is described the procedure for measuring the surface tensions of the hydrocarbons isobarically under nitrogen saturated conditions. The method of lexst squares was applied to the data and linear equations obtained. The e uations were used to calculate the surface tension valueo which are presented in two 1,ables together with the constants 01 the least square equations. A third table presents least square constants for the latent heat equation, and also the enthalpy of the surface formation of the liydrocarbons.

Molecular dynamics simulations of the surface tension of n-hexane, n-decane and n-hexadecane

“…At coexistence we compared our simulation results with those from Alejandre et al [11] and at lower temperatures with experimental data [23,24].…”

“…Figure 3 showed that the simulations overestimate the liquid densities at these conditions. Figure 5 shows that, plotted versus T , the surface tension of the alkanes is 2474 J. P. Nicolas and B. Smit [23,24].…”

Preliminary models for viscosity, thermal conductivity, and surface tension of pure fluid constituents of selected diesel surrogate fuels

“…Due to these unexplained discrepancies, we estimate the uncertainty for the thermal conductivity of the liquid phase from 300 K to 650 K at pressures to 50 MPa to be 5 %. The surface tension data from four sources (92)(93)(94)(95) were fit to give the coefficients in Table 6, and the deviation plot is shown in Figure 21. The estimated uncertainty is 2 %.…”

“…We estimate the uncertainty of the correlation at pressures to 50 MPa to be 4 % for the temperature range from 313 K to 650 K. The two data sets (90,99) were both made in a concentric cylinder apparatus with an estimated uncertainty of 3 %; it is unknown why they do not agree to within their experimental uncertainties. Two sets of surface tension data from Jasper and coworkers (92,93) were used to obtain the coefficients in Table 6 and the deviation plot in Figure 24. The estimated uncertainty of the correlation is 1 %.…”

Gradient theory computation of the radius-dependent surface tension and nucleation rate for n-nonane clusters

“…The surface tension for n-nonane has been measured by Jasper et al 38,54 Orthobaric 57 data 38 span over the range of 0 -60°C and has been correlated by the authors to a linear form ͑mN m −1 ͒ = 24.84− 0.094 17͑T / K − 273.15͒. Isobaric measurements 54 were taken in a dry nitrogen atmosphere at a total pressure of 760 Torr ͑101 325 Pa͒ in the range of 0 -100°C. The data have been correlated by the authors as ͑mN m −1 ͒ = 24.72 − 0.093 47͑T / K − 273.15͒.…”